Software reset doesn't work

Sorry, 

I am using the following:

CCSv53 (version 3.3)
Blackhawk USB 2000 Emulator
TSM320F28016 on our custom board

Could anyone from TI answer my question? In order to clarify my question, I copy my code (It'i quite similar to wathdog example code). Thank you.

void main(void)
{

InitSysCtrl();

// Step 2. Initalize GPIO:
// This example function is found in the DSP280x_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
// InitGpio(); // Skipped for this example

// Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interrupts
DINT;

// Initialize PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared.
// This function is found in the DSP280x_PieCtrl.c file.
InitPieCtrl();

// Disable CPU interrupts and clear all CPU interrupt flags:
IER = 0x0000;
IFR = 0x0000;

// Initialize the PIE vector table with pointers to the shell Interrupt
// Service Routines (ISR).
// This will populate the entire table, even if the interrupt
// is not used in this example. This is useful for debug purposes.
// The shell ISR routines are found in DSP280x_DefaultIsr.c.
// This function is found in DSP280x_PieVect.c.
InitPieVectTable();

// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.
EALLOW; // This is needed to write to EALLOW protected registers
PieVectTable.WAKEINT = &wakeint_isr;
EDIS; // This is needed to disable write to EALLOW protected registers

// Step 4. Initialize all the Device Peripherals:
// This function is found in DSP280x_InitPeripherals.c
// InitPeripherals(); // Not required for this example

// Step 5. User specific code, enable interrupts:

// Clear the counters
WakeCount = 0; // Count interrupts
LoopCount = 0; // Count times through idle loop

// Connect the watchdog to the WAKEINT interrupt of the PIE
// Write to the whole SCSR register to avoid clearing WDOVERRIDE bit
EALLOW;
SysCtrlRegs.SCSR = BIT1;
EDIS;

// Enable WAKEINT in the PIE: Group 1 interrupt 8
// Enable INT1 which is connected to WAKEINT:
PieCtrlRegs.PIECTRL.bit.ENPIE = 1; // Enable the PIE block
PieCtrlRegs.PIEIER1.bit.INTx8 = 1; // Enable PIE Gropu 1 INT8
IER |= M_INT1; // Enable CPU INT1
EINT; // Enable Global Interrupts

// Reset the watchdog counter
ServiceDog();

// Enable the watchdog
EALLOW;
SysCtrlRegs.WDCR = 0x0028;
EDIS;

// Step 6. IDLE loop. Just sit and loop forever (optional):
for(;;)
{
LoopCount++;

// Uncomment ServiceDog to just loop here
// Comment ServiceDog to take the WAKEINT instead
// ServiceDog();
}

}

// Step 7. Insert all local Interrupt Service Routines (ISRs) and functions here:
// If local ISRs are used, reassign vector addresses in vector table as
// shown in Step 5

interrupt void wakeint_isr(void)
{
WakeCount++;

if (WakeCount > 300)
{
WakeCount = WakeCount;
EALLOW;
// Enable the Watchdog
SysCtrlRegs.WDCR = 0x0028;
// Force a reset
SysCtrlRegs.WDCR = 0x00;
//EDIS;
}

// Acknowledge this interrupt to get more from group 1
PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;}

//===========================================================================
// No more.
//===========================================================================